You will be taken to the Password Change screen. Enter your new password in both blanks.

If both of the passwords entered in the Blanks match you will see a success screen.
You are automatically logged in. Click the "Browse Books" button to go to the Store.

If you get a message indicating the email cannot be found, you have either typed your email address wrong or perhaps you logged in using Facebook. Try going back to the login screen and selecting Login with Facebook option